Fix: Align Mantine’s behavior with other themes when clearing string fields

Author: mshibanami

packages/mantine/src/templates/BaseInputTemplate.tsx

@@ -55,7 +55,7 @@ export default function BaseInputTemplate<
   const handleChange = useCallback(
     (e: ChangeEvent<HTMLInputElement>) => {
       const handler = onChangeOverride ? onChangeOverride : onChange;
-      const value = e.target.value === '' ? (options.emptyValue ?? '') : e.target.value;
+      const value = e.target.value === '' ? options.emptyValue : e.target.value;
       handler(value);
     },
     [onChange, onChangeOverride, options],

packages/mantine/src/widgets/PasswordWidget.tsx

@@ -39,7 +39,7 @@ export default function PasswordWidget<
     onFocus,
   } = props;
 
-  const emptyValue = options.emptyValue || '';
+  const emptyValue = options.emptyValue;
   const themeProps = cleanupOptions(options);
 
   const handleChange = useCallback(

packages/mantine/src/widgets/TextareaWidget.tsx

@@ -40,7 +40,7 @@ export default function TextareaWidget<
   } = props;
 
   const themeProps = cleanupOptions(options);
-  const emptyValue = options?.emptyValue ?? '';
+  const emptyValue = options?.emptyValue;
 
   const handleChange = useCallback(
     (e: ChangeEvent<HTMLTextAreaElement>) => {